You would need supplemental SR22 coverage to go with your regular insurance policy.
Typically, insurance companies will offer better rates to those with higher credit scores, though this is determined on a case by case basis.
Most of the large insurers will require a one year contract. For shorter terms, you would need specialty insurance.
Yes, most moving violations will increase the premiums you pay, though there are exceptions to this.
Yes, most insurance companies offer substantial discounts if you get more than one policy.